Effects of Partial Replacement of Iron with Tungsten on Microstructure, Electrical, Magnetic and Humidity Properties of Copper-Zinc Ferrite Material

• Published in: Journal of electronic materials Vol. 43; no. 9; pp. 3522 - 3526
• Main Authors: Tudorache, Florin, Petrila, Iulian
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.09.2014; Springer; Springer Nature B.V
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Electric properties; Electronics and Microelectronics; Exact sciences and technology; Ferrites; Instrumentation; Iron; Magnetic properties and materials; Magnetism; Materials Science; Optical and Electronic Materials; Physics; Solid State Physics; magnetic properties; humidity sensitivity; electrical properties; Spinel ferrite; Scanning electron microscopy; Phase composition; Electrical properties; Capacitive transducer; Capacitive sensors; Iron; XRD; Zinc; Crystallites; Spinels; Tungsten; Humidity sensors; Humidity; Copper; Microstructure; Sol-gel process; Magnetic properties
• ISSN: 0361-5235; 1543-186X
• DOI: 10.1007/s11664-014-3190-6

This paper presents the analysis of the influence of partial replacement of iron with tungsten on the properties of copper-zinc spinel ferrite material. The samples of Cu 0.5 Zn 0.5 W x Fe 2− x O 4 spinel powder ferrites were prepared by using a sol–gel self-combustion technology. The ferrite samples were treated for 30 min at 1000°C. The x-ray diffraction was used in order to establish the differences between the phase compositions of ferrites with different tungsten content. Scanning electron microscopy was used to highlight the influence of the tungsten content on the crystallites. All the samples of Cu 0.5 Zn 0.5 W x Fe 2− x O 4 were subject to investigation of the influence of the substitution of tungsten upon their electrical and magnetic properties. The measurements of the electrical properties were performed in different humidity conditions, in order to highlight the effect of moisture conditions on the electrical properties of the material and to analyze the applicability of Cu 0.5 Zn 0.5 W x Fe 2− x O 4 ferrite for resistive or capacitive humidity sensors.